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Replacing UMO electronics fan by 2 12V fans


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Posted · Replacing UMO electronics fan by 2 12V fans

Hi!

This is my first post here.

The electronics fan on my Ultimaker original got really noisy. I'd like to replace it with 2 small silent fans like in this design: https://www.youmagine.com/designs/ultimaker-electronics-fan-replacement

I wonder what the voltage of the connector on the board is. The fan that came with the printer has 24V printed on it, but here http://reprap.org/wiki/Ultimaker%27s_v1.5.7_PCB it says the connector would be 12V.

My Ultimaker was built last fall, so I think I have the 1.5.7 board.

Any insights? I don't have a way to measure the voltage at the moment.

Thanks,

Thomas

 

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    Posted · Replacing UMO electronics fan by 2 12V fans

    Consider peeling back the sticker in the center of the fan and if you can see the bearing in there add a drop of oil. I'm sure many fans will work just fine.

    Ideally I think you want a "blower" and not a "fan". Fans have blades like a propellor - typically 5 blades. Blowers have typically 30 blades and use centrifugal force and can withstand much more back pressure. I don't know if german suppliers use different words for the 2 kinds of devices.

     

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    Posted · Replacing UMO electronics fan by 2 12V fans

    Hi!

    This is my first post here.

    The electronics fan on my Ultimaker original got really noisy. I'd like to replace it with 2 small silent fans like in this design: https://www.youmagine.com/designs/ultimaker-electronics-fan-replacement

    I wonder what the voltage of the connector on the board is. The fan that came with the printer has 24V printed on it, but here http://reprap.org/wiki/Ultimaker%27s_v1.5.7_PCB it says the connector would be 12V.

    My Ultimaker was built last fall, so I think I have the 1.5.7 board.

    Any insights? I don't have a way to measure the voltage at the moment.

    Thanks,

    Thomas

    I have the same issue and also considered the linked fan shroud but then I noted that a part of the ply has to be removed.

    Currently I'm working on a remixed drop-in replacement without woodwork but it's not tested nor published up to now...

    Regarding voltage I found a note that it might be 19V on the fan socket. Could anybody confirm or reject this??

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    Posted · Replacing UMO electronics fan by 2 12V fans

    Thanks everybody.

    I will first try to re-oil the stock blower. Actually that is quite obvious once you know that the bearing is right there below the sticker.

    To mount the linked printable fan duct, I don't see why part of the ply has to be removed (except the two holes for screws)? Anyway, I now read that it may interfere with a heated bed electronics which I may install later. So I'll reconsider options later.

     

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    Posted · Replacing UMO electronics fan by 2 12V fans

    I did, but thats not a optimal long term solution... Also due to the mounting direction the oil is running out.

    I have not found a similar "quality" blower therefore I'd like to test this 2fan solution...

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    Posted · Replacing UMO electronics fan by 2 12V fans

    I take out the rotor and fill everything with grease. So I have the best results. The best thing to do that with a new fan. Oil disappears too quickly. Sintered bronze bearings are normally only oiled, but experience shows that grease is an longer Time active.

    (Translated by Google Translator)

     

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